1.4 D-4D engine: faults and reliability

• 1.4 D-4D 75 (1ND-TV, 75 hp, 2002-2005)

  2002–2005 · 75 hp · 1ND-TV

  With caution

  The injectors, turbo and clutch and dual-mass flywheel assembly are documented on the first-generation Yaris and on the MINI One D with this same output; it is worth checking the history of these parts before buying.^[3][5]

• 1.4 D-4D 90 (1ND-TV, 88-90 hp, 2004-2018)

  2004–2018 · 88–90 hp · 1ND-TV

  With caution

  This is the version with the most documented cases of injector, turbo, EGR valve and clutch and dual-mass flywheel faults and, on units with a particulate filter, DPF clogging; it is worth checking these points before buying, although we have not found a pattern as serious as that of other, larger Toyota diesels.^[2][4][7]

Buy: No known serious faults, or they have already been corrected, in this version. With caution: Worth buying if something specific is verified: history, a replaced part or a completed campaign. Avoid: High risk of a serious fault that is hard to check for or prevent.

1. 1High severityCommonFrequency: CommonTurboTurbocharger failureYes: the 1.4 D-4D's turbo is documented as failing on the Yaris, Corolla, Auris and MINI One D, sometimes prematurely (one case at 15,000 km covered under warranty) and other times after seizing alongside high oil consumption.Appears at around 15,000 km
2. 2Medium severityCommonFrequency: CommonInjectionInjector wear and failureYes: the common-rail injectors on the 1.4 D-4D are documented as failing on the Yaris, Auris and MINI One D, with symptoms of jerking, noise and the engine warning light on; one source describes the problem as "chronic" on the MINI One D's engine.
3. 3Medium severityCommonFrequency: CommonEmissions controlClogged diesel particulate filter (DPF)Yes, on units with a standard-fit particulate filter: the 1.4 D-4D's DPF fills with soot on short trips, with the warning light on and, in one documented Auris case, a complete replacement at 236,000 km.
4. 4Medium severityCommonFrequency: CommonClutchPremature clutch and dual-mass flywheel wearThe 1.4 D-4D's clutch is frequently documented, almost always above 84,000 km, although there is the odd clearly premature case (a Yaris with the clutch replaced at 28,000 km); the dual-mass flywheel also fails, with proportionally more weight on the MINI One D.Appears at around 84,000 km
5. 5Medium severityOccasionalFrequency: OccasionalEmissions controlEGR valve clogged with sootYes, though with fewer cases than on other Toyota diesels: the 1.4 D-4D's EGR valve clogs with soot, especially on short trips, with cases from around 189,000 km on the Yaris and an inexpensive clean (around €60) that usually resolves it on the Corolla.Appears at around 189,000 km

Severity colours: low, medium, high, critical. How we rate them

Manufacturer

Toyota Motor Corporation

Family

Toyota ND

Fuel

Diesel

Displacement

1,364 cm³

Cylinders

4

Fuel system

Turbo

Injection

Common rail

Timing

Chain

Power

75–90 hp

Peak torque

205 Nm

Production

2002–2018

Makes

Toyota and MINI

Technical data^[1][6]

1. 2002–2005

   1.4 D-4D 75 (1ND-TV, 75 hp, 2002-2005)

   This is the first version of the engine, with a fixed-geometry turbo, no particulate filter and around 75 hp. It was fitted to the first-generation Yaris and was the one Toyota supplied to BMW for the first MINI One D (R50/R53) from 2003.^[1][3][5]

2. 2004–2018

   1.4 D-4D 90 (1ND-TV, 88-90 hp, 2004-2018)

   This is the higher-output version (88-90 hp depending on the market), with a variable-geometry turbo and, in its last years of production, a particulate filter to meet the Euro 5 standard. It was the most widespread: it was fitted to the Corolla from 2004, the second-generation Yaris, the first- and second-generation Auris, the Urban Cruiser, the Verso-S and, alongside the 75 hp version, the MINI One D.^{[1][2][5][6][10]}